What was found
DURING CENTER WINDSHIELD FRAME CHANGE DUE TO INTERGRANULAR CORROSION, PILOT FORWARD WINDSHIELD WAS REMOVED REVEALING SEVERE INTERGRANULAR CORROSION ON LOWER WINDSHIELD SEAL MATING SURFACE OF FRAME. AFTER BLENDING CORROSION, SEVERAL AREAS MAPPED OUT TO PROTRUDE APPROXIMATELY 10-15 PERCENT INTO FRAME. MANUFACTURER PRESENTED A REPAIR SCHEME FOR THIS FRAME USING PR1422 SEALANT TO FILL VOIDS. THIS CORROSION IS NOT VISIBLE WITHOUT REMOVING WINDSHIELD. MANUFACTURER HAS APPROVED AN ULTRASONIC TEST PROCEDURE FOR THIS FRAME WHICH IS CURRENTLY IN THE FALCON 20 MM TO CHECK FOR CORROSION IN THIS AREA WITHOUT REMOVING WINDSHIELD.